Looks good! The only thing I'm not sure of is whether the API module works correctly with
@link ... @endlink
not all on the same line.

I also think maybe it's easier for a person reading form.inc to read if the links are all on one line. What do you think? I see that we don't have it in http://drupal.org/node/1354 as a standard to make them all on one line (probably because I'm not sure whether API module requires it or not).